Bottle filter and pouring device

Abstract: A liquid filter device for use with bottles holding wine or other liquids, for use in filtering cork or other sediments from the liquid while pouring the liquid out of the bottle, comprising a generally tubular body (12) which may be inserted into the neck of a bottle (20), where the body has a top portion open to the internal volume of the filter device and a bottom portion sealed from the internal volume, openings (22) formed in the body, a filter (24) located on the inside of the body to cover such openings and means (18) for strengthening said body being integrally formed thereon.

Description: This invention relates to a device used to filter out sediments, including cork, from a wine bottle or other bottle when the liquid therein is being poured out. It is a common problem that the cork in a wine bottle may be broken or severely damaged in an attempt to remove it from the neck of the bottle. Even if the damaged cork is removed from the bottle, it is highly likely that a portion of the cork will remain in the bottle and will be poured out with the wine or other liquid. In some cases it is impossible to completely remove the cork and is necessary to push the remaining cork into the bottle where it may contaminate the liquid with cork particles. Another use of such a device may be for bottles which have fruit pieces floating in the liquid for flavour. It is preferable to be able to pour the liquid out of the bottle without the fruit particles and without the need for a strainer. EP-A-210915 shows a cartridge for use in the production of sparkling wine. It is not intended to provide a filtering function while the wine is being poured. GB-A-2219520 shows a stopper which is inserted into a wine bottle after removal of the cork. The stopper opens into a hollow body with an open end and an air vent at the top. A mesh covers the lower part of the open end. It is an object of this invention to present a simple and inexpensive mechanism for use in filtering cork or other sediments from a bottle while pouring liquid out of the bottle. While this invention is most readily used in wine bottles due to the common use of corks with such bottles, it may be used in any similar bottle and the invention is not so limited. It is a further object of this invention to present a bottle filter mechanism which can also be used to assist in pushing the cork or other stopper into the bottle for access to the liquid. According to the invention, there is provided a liquid filter device for use with a bottle, comprising a generally tubular body which may be inserted into the neck of the bottle, the body having a top portion open to the internal volume of the body, a bottom portion sealed from the internal volume and means for strengthening the body integrally formed thereon, characterised by: openings formed in the lower part of the body, about its circumference; filtering means mounted on the body to cover the openings, the filtering means being arranged to filter liquid as it enters the internal volume of the body from within the bottle; and a vent in the bottom portion for venting air through the body of filter device. Thus, the invention comprises a generally tubular filter mechanism preferably composed of a plastics material such as polypropylene and which may be inserted into the neck of a wine or other similar bottle. The body of the device is preferably manufactured by one piece insert injection molding. The body has a plurality of openings formed at one end for liquid to enter the internal section of the body, and in a preferred form, has a cylindrically shaped filter located inside the body and covering the openings. The top of the device is open for liquid to be poured out of the internal section and includes means to seal the top of the bottle when the filter device is inserted therein. The bottom of the tubular body is sealed but includes a vent opening to assist in the flow of liquid out of the bottle through the filter. The cylindrical filter used may be in the 100 to 300 µm range and is preferably a 200 µm filter, as it has been determined that this size filter is fine enough to filter undesired particles and contaminants such as broken cork pieces, yet still allows sediments which enhance the flavour of the wine to pass through. The filter device may be removed from the bottle after use, washed and reused. It is preferred that the vent in the device be 0.125 inches (3.2 mm) in diameter. This size vent has been shown to allow for the highest possible flow rate and smoothest flow of fluid out of the bottle without excess splashing in and out of the glass using a 200 µm filter as described herein. As the filter size decreases, the vent size must be increased to allow for proper flow. A further feature of this invention is the incorporation of ribs on the side of the cylinder to increase the strength of the device to assist in the removal of cork from the bottle neck. This additional stiffness provided by such ribs allows the user to use the device to push the cork through the bottle neck without a risk of damage to the filter device. The device is also of sufficient length to extend into the bottle and below the bottle neck to assist in blocking the cork in the liquid from the filter. The invention may be carried into practice in various ways and one embodiment will now be described by way of example with reference to the accompanying drawings, in which:- Figure 1 is a cross-sectional view of the present invention as located inside the neck of a bottle; Figure 2 is a top plan view of the filter mechanism in accordance with the present invention; Figure 3 is a side view of the filter mechanism in accordance with the present invention; Figure 4 is a bottom plan view of the filter mechanism in accordance with the present invention; and Figure 5 is a cross-sectional side view of the filter mechanism in accordance with the present invention. Fig. 1 shows the filter device 10 located inside the neck of a standard bottle 20. It is to be understood that there are many different bottle shapes currently in use for wine and other liquids, and this invention is intended to be usable in most if not all such bottle designs. The preferred embodiment described herein is intended to be illustrative of these various designs. As shown most clearly in Figs 3 and 5, filter device 10 includes a generally tubular body 12 having a top and a bottom and an internal surface 33. The diameter of body 12 is sized to fit the internal diameter of most commercially available bottles. Most bottles in commercial use for products such as wine have an internal diameter of approximately 0.644 inches (16.4 mm) to 0.780 inches (19.8 mm), and thus the diameter of this device could range accordingly. The preferred embodiment of this device is approximately 0.7 inches (17.8 mm) although it could be readily manufactured in any size to fit different applications. Integrally formed with body 12 at the upper end thereof are head 14 and cap 16, which is shaped to securely fit on the neck of bottle 20. Stiffening ribs 18 are also integrally formed on the upper portion body 12. Ribs 18 provide the necessary stiffness to the device 10 for insertion into the bottle 20, and are flexible enough to accommodate a bottle having an internal diameter which is slightly smaller than the diameter of the ribs 18. As shown most clearly in Fig. 1, it is preferred to locate the bottom rib a in close proximity to the top of filter 24, as bottom rib 18a acts to stop the flow of liquid. This configuration allows for the most efficient displacement of liquid from bottle 20 through filter 24. Body 12 is of a length sufficient to allow it to extend into bottle 20 past the neck area 31, so that the shape of the bottle 20 can assist in the filtering process by providing a sufficient volume to prevent cork particles from blocking filter 24. As shown in Fig. 1, there is an area 30 inside bottle 20 where the cork particles will not block flow of liquid through the filters 24. To accomplish this feature for most commercially available bottles, the overall length of filter device 10 should be approximately four inches (102 mm), although the device could be manufactured in any length for different applications. At the bottom portion of body 12 are a plurality of windows 22 into which fluid may flow. In the preferred embodiment shown, there are four windows equally spaced about the circumference of the body 12. Filter 24, which is preferably manufactured from polyester, is cylindrically shaped and located inside body 12 on internal horizontal walls 35 so that it covers each window 22. Therefore, any fluid entering the windows 22 must pass through filter 24. The filtered fluid then passes through the internal portion of filter device 10 before being poured out the opening 27 formed into top surface 28. The total surface area of the filter will vary depending on the length of filter 24, which length may be approximately 1.5 inches (38 mm) in a preferred embodiment, and the diameter of body 12. As shown most clearly in Fig. 4, the bottom of body 12 includes a plurality of nodes 26 integrally formed on bottom surface 23. These nodes 26 function to assist in pushing a cork that is stuck through the bottle neck, and assist in properly aligning the body 12 in the internal neck of bottle 20. The present invention uses a vent 25 formed in bottom surface 23 to allow air to pass through filter device 10 so that the fluid may flow more readily.

Claims: A liquid filter device (10) for use with a bottle (20), comprising a generally tubular body (12) which may be inserted into the neck (20) of the bottle, the body having a top portion open to the internal volume of the body, a bottom portion (23) sealed from the internal volume and means (18) for strengthening the body integrally formed thereon, characterised by: openings (22) formed in the lower part of the body (12), about its circumference; filtering means (24) mounted on the body to cover the openings, the filtering means (24) being arranged to filter liquid as it enters the internal volume of the body (12) from within the bottle (20); and a vent (25) in the bottom portion for venting air through the body of filter device (10). A liquid filter device as claimed in Claim 1, characterised in that the strengthening means comprises a plurality of ribs (18) formed around the circumference of the body (12). A liquid filter device as claimed in Claim 1 or Claim 2 characterised in that this filtering means (24) comprises a polyester filter in the range of 100 µm to 300 µm. A liquid filter device as claimed in Claim 3, characterised in that the filtering means (24) is a 200 µm polyester filter. A liquid filter device as claimed in any preceding Claim, characterised by a series of nodules (26) formed on the external surface of the bottom portion. A liquid filter device as claimed in any of preceding Claim, characterised in that the filtering means (24) is mounted on the inside of the body (12).

Inventors: KAY RONALD J, KAY, RONALD J.
Applicants: FILTERTEK INC, FILTERTEK, INC.
Application year: 1994
Main classification: B01D35
IPC codes: B01D35, C02F1